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Akadēmiskā Dzīve, 51. rakstu krājums
2015
Augusta Saulieša kolekcija LU Akadēmiskās bibliotēkas Misiņa bibliotēkā
2020
Ernesta Foldāta vēstule Alfonam Piterānam 1994. gada 30. decembrī
1994
Ernesta Foldāta vēstule Alfonam Piterānam, kurā viņš raksta par iemesliem, kāpēc nav izdevies 1994. gadā atbraukt uz Latviju no Venecuēlas, par ceļojumu uz Hārvardas Universitāti, literatūras meklēšanu jaunai grāmatai, grūtajiem finansiālajiem apstākļiem, veselību, grāmatas izdošanu, zinātnisko darbu, darba paradumiem. Drukāta mašīnrakstā uz 1 lapas. Glabājas Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekciju krājumā.
ATLAS data quality operations and performance for 2015-2018 data-taking
2020
The ATLAS detector at the Large Hadron Collider reads out particle collision data from over 100 million electronic channels at a rate of approximately 100 kHz, with a recording rate for physics events of approximately 1 kHz. Before being certified for physics analysis at computer centres worldwide, the data must be scrutinised to ensure they are clean from any hardware or software related issues that may compromise their integrity. Prompt identification of these issues permits fast action to investigate, correct and potentially prevent future such problems that could render the data unusable. This is achieved through the monitoring of detector-level quantities and reconstructed collision ev…
Observation and Measurement of Forward Proton Scattering in Association with Lepton Pairs Produced via the Photon Fusion Mechanism at ATLAS
2020
The observation of forward proton scattering in association with lepton pairs (eþe− þ p or μþμ− þ p) produced via photon fusion is presented. The scattered proton is detected by the ATLAS Forward Proton spectrometer, while the leptons are reconstructed by the central ATLAS detector. Proton-proton collision data recorded in 2017 at a center-of-mass energy of ffiffiffi s p ¼ 13 TeV are analyzed, corresponding to an integrated luminosity of 14.6 fb−1. A total of 57 (123) candidates in the ee þ p (μμ þ p) final state are selected, allowing the background-only hypothesis to be rejected with a significance exceeding 5 standard deviations in each channel. Proton-tagging techniques are introduced f…
Measurement of the Lund jet plane using charged particles in 13 TeV proton-proton collisions with the ATLAS detector
2020
The prevalence of hadronic jets at the LHC requires that a deep understanding of jet formation and structure is achieved in order to reach the highest levels of experimental and theoretical precision. There have been many measurements of jet substructure at the LHC and previous colliders, but the targeted observables mix physical effects from various origins. Based on a recent proposal to factorize physical effects, this Letter presents a double-differential cross-section measurement of the Lund jet plane using 139 fb−1 of √s=13 TeV proton-proton collision data collected with the ATLAS detector using jets with transverse momentum above 675 GeV. The measurement uses charged particles to ac…
Likkumu-grahmata par Kursemmes semneekeem, us pawehleschanu tahs wissaugstaki eezeltas Kommissiones par eeweschanu scho likkumu latweeschu wallodā pa…
1818
Bibliogrāfiskās ziņas: Seniespiedumi latviešu valodā, 1525-1855 : kopkatalogs. Rīga : Latvijas Nacionālā bibliotēka, 1999, Nr. 995. Pieejams tiešsaistē: seniespiedumi_latviesu_valoda_1525_1855.pdf